14 September 2010

Historical Pictures

This is our history that our ancestors did not know!

(Click on each picture to maximize it)

[From left to right side of the picture] =>

13.7 billion years ago, the big-bang created all the building blocks (elementary particles) of our universe. The universe was dominated by the quantum mechanics. Gravity (one of the building block) is so week to have any significant influence.

The universe expanded faster than the speed of light (Inflation)

The big-bang afterglow light after 400,000 years. This is captured by WMAP satellite (also shown below). Past and future can be derived from this baby universe.

There was a dark period with no light (electro-magnetic wave).

The elementary particles slowly combined together formed basic atoms. They combined and pulled together by gravity and formed 1st star and hence light about 400 million years after the big-bang. The Stars created other atoms that planets and life are made of (We are made of star dust!).

The universe has been evolving and expanding. In the recent past, as the universe expanded enough, the dark energy became stronger than the attracting gravity, and hence the universe is expanding at faster rate.

This is our galaxy Milky Way one of billions of such galaxies in the known universe. It has 200 billion stars. Our sun (indicated as 'We are here') located in one of its spiral arm. (If clicking on the image does not work, try here)

[Tree of life, from inner circle (4000 million years ago) to outer circle (today)] =>

Our earth is 4500 million years old. The first living cell molecule formed 4000 million years ago. The natural selection process led to simple to complex organisms; from Bacteria, plants to animals (from left side to right side). Note the humans (Mammals) at the end.

Note the global ice ages and mass extinctions at different times. The last mass extinction killed the dinosaurs (65 million years ago). As the bottom text in the picture says, this picture only shows a few of those organisms that have gone extinct. The evolution process seems to have created a suitable design to the environment because all those bad designs were died out.

*** These pictures belong to different websites (Google Search). When they are clicked, it will directly go to the original sites.

7 comments:

Dark Energy still contributes about 90% of our universe and we don't know much about it yet, there are lots of experiments on the way to prove it though. Everything for now we know is about the particles associated to light, but the light is governed by Dark Energy which we don't know nothing. I would like you cover the Dark Energy as a separate blog though.

Here I have just focused on well established/ observed things. For example, evolution is as established as earth is round. Before going into the unknown or not so well established part, I want people to appreciate what we know now. These pictures emerged just 100 years back. Buddha and Jesus did not know them! Even Galileo and Newton did not know them!

As per current model, dark energy is 70-75%. It is just a hypothetical energy to explain observed accelerated expansion of our universe. Though it has large percentage, it is just a vacuum energy, so tiny at every point, distributed throughout the universe.http://en.wikipedia.org/wiki/Dark_energy

light is photon particle; one force particle out of 4 known forces (photon or electro-magnetism, strong force or gulon, week forces and gravity). All matters consist of Quarks and Leptons particles.http://en.wikipedia.org/wiki/Elementary_particle

Nice post that shows how insignificant we are both in time and space. But still we are fighting for identity as individuals or as a group in various ways. And let's hope human species is not one of those bad designs :)

Nice post that shows how insignificant we are both in time and space. But still we are fighting for identity as individuals or as a group in various ways. And let's hope human species is not one of those bad designs :)//

Thanks for your comment! I agree with your view! A quote: "Before we work on artificial intelligence why don't we do something about natural stupidity?"

H fuses together form He and release energy in a star. As He is heavier than H, He moves to the center. He fuses together and create even heavier elements like O, C, Fe (Iron). So, the star is layers of elements like onion with heavier Fe at the center. As Fe cannot fuse and form energy, over the time the star utilizes all the fuel and collapses itself and explode as super nova. This explosion creates other heavier elements such as Au (gold). At the end of heavier star super nova, block hole forms.